
1 Safety Precautions 5
1.1. GENERAL GUIDELINES 5
1.2. Before Repair and Adjustment 5
1.3. Protection Circuitry 6
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
3 Precaution of Laser Diode 8
4 About Lead Free Solder (PbF) 8
5 Handling Precautions for Traverse Unit 9
5.1. Cautions to Be Taken in Handling the Optical Pickup Unit
9
5.2. Grounding for electrostatic breakdown prevention 9
6 Accessories 11
7 Operation Procedures 12
7.1. Operating instructions 12
7.2. Disc information 15
8 New Features 17
8.1. Using of Receiver Unit (SH-FX60 / SH-FX80) 17
9 Self-Diagnosis and special mode setting 21
9.1. Service Mode Summary Table 21
9.2. Service Mode Table 1 21
9.3. DVD Self Diagnostic Function-Error Code 26
9.4. Sales Demonstration Lock Function 28
9.5. Service Precautions 29
10 Assembling and Disassembling 30
10.1. Disassembly Flow Chart 31
10.2. Main Components and P.C.B. Locations 32
10.3. Disassembling the Top Cabinet 33
10.4. Disassembling the Front Panel Assembly 33
10.5. Disassembling the Tray Assembly 33
10.6. Disassembling the Rear Panel 34
10.7. Disassembling the Mechanism Base 34
10.8. Disassembling the FL & Head phone P.C.B. 34
10.9. Disassembling the Main P.C.B. 34
10.10. Disassembling the AC Inlet, Power & Sub power P.C.B 35
10.11. Disassembly of Digital Amp IC 35
10.12. Disassembly of Digital Amp IC (IC5400) 35
10.13. Disassembly of Regulator IC 35
10.14. Disassembly of Switch Regulator IC (IC5701) 36
10.15. Disassembly of the Tray Base Guide (L) and Tray Base
Guide (R) 36
10.16. Disassembly of the Rotary Tray 36
10.17. Disassembly of the Traverse Unit 37
10.18. Assembly of Tray Assembly 40
11 Service Fixture and Tools 41
12 Service Positions 41
12.1. Checking & Repair Main P.C.B., Power P.C.B., FL and
Head phone P.C.B. 41
12.2. Checking & Repair DVD Module P.C.B 41
13 Measurements and Adjustments 42
13.1. Service Tools and Equipment 42
13.2. Important points in adjustment 42
13.3. Storing and handling of test discs 42
13.4. Optical adjustment 43
13.5. Abbreviations 44
14 Voltage and Waveform Chart 46
14.1. DVD Module P.C.B. 46
14.2. Main P.C.B. 47
14.3. Power P.C.B. 48
14.4. FL P.C.B. 48
14.5. Loading P.C.B., Tray Motor P.C.B., Sensor P.C.B. 49
14.6. Waveform Chart 50
15 Illustration of IC's, Transistors and Diodes 51
16 Wiring Connection Diagram 53
17 Block Diagram 55
18 Schematic Diagram 63
18.1. (A) DVD Module Circuit 65
18.2. (B) Main Circuit 69
18.3. (C) Power Circuit 75
18.4. (D) FL and Headphone Circuit 79
18.5. (E) Loading motor, Tray motor, Sensor Circuit 81
19 Printed Circuit Board 83
19.1. (A) DVD Module P.C.B. 83
19.2. (B) Main, AC-Inlet, Sub-power P.C.B. 84
19.3. (C) Power P.C.B. 85
19.4. (D) FL, Headphone, Loading motor, Tray motor, Sensor
P.C.B. 86
20 Basic Troubleshooting Guide 87
20.1. Basic Troubleshooting Guide for DVD Module 87
20.2. Basic Troubleshooting Guide for Traverse Unit 89
21 Overall Block Diagram for HT440 90
21.1. SC-HT440 DVD Unit Block Diagram 91
21.2. HT440 Block Diagram (Analog Signal : DVD 5.1ch Play
Back Mode) 92
21.3. HT440 Block Diagram (Analog Signal : 2ch Analog Input
Mode) 93
22 Terminal Function of ICs 94
22.1. IC2001 (MN101C49GHG): Micro-processor IC 94
23 Explode Views 95
23.1. Cabinet Parts Location 95
23.2. Packaging 98
24 Replacement Parts List 99
CONTENTS
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SA-HT440P / SA-HT440PC